EP0176316A2 - Procédé de fabrication d'une étoffe non tissée en fibres de résine soluble dans l'eau - Google Patents

Procédé de fabrication d'une étoffe non tissée en fibres de résine soluble dans l'eau Download PDF

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Publication number
EP0176316A2
EP0176316A2 EP85306651A EP85306651A EP0176316A2 EP 0176316 A2 EP0176316 A2 EP 0176316A2 EP 85306651 A EP85306651 A EP 85306651A EP 85306651 A EP85306651 A EP 85306651A EP 0176316 A2 EP0176316 A2 EP 0176316A2
Authority
EP
European Patent Office
Prior art keywords
water
fibers
soluble resin
nonwoven fabric
pullulan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP85306651A
Other languages
German (de)
English (en)
Other versions
EP0176316A3 (fr
Inventor
Shigeo Fujii
Shoichi Mori
Jyoichi Tabushi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tonen General Sekiyu KK
Original Assignee
Toa Nenryo Kogyyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP59193970A external-priority patent/JPS6175861A/ja
Priority claimed from JP59194796A external-priority patent/JPS6175862A/ja
Application filed by Toa Nenryo Kogyyo KK filed Critical Toa Nenryo Kogyyo KK
Publication of EP0176316A2 publication Critical patent/EP0176316A2/fr
Publication of EP0176316A3 publication Critical patent/EP0176316A3/fr
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43838—Ultrafine fibres, e.g. microfibres

Definitions

  • the present invention relates to a nonwoven fabric or cloth of a water-soluble resin such as pullulan. More particularly, it relates to a nonwoven fabric of water-soluble resin superfine fibers composed of a resin such as pullulan and a process for the production of the same.
  • Edible and water-soluble high molecular weight materials e.g. pullulan
  • pullulan have widely been used as foods, packaging materials or vessels for foods and films or fibers for use other than as or with foods.
  • fibers the primary process for producing pullulan fibers, is described in Japanese Patent Publication No 35165/1978 and comprises extruding and spinning an aqueous solution of pullulan in a gaseous phase at a temperature of less than 110°C. According to this process, however, it is impossible to produce a nonwoven fabric, in particular one consisting of superfine fibers of pullulan.
  • a nonwoven fabric comprising water-soluble resin fibers having a mean fiber diameter of 30 pm or less and a basis weight of 5 to 5 00 g /m 2 .
  • the invention also provides a process for the production of a nonwoven fabric, which comprises extruding an aqueous solution containing a water-soluble resin or a melt of a water-soluble resin plasticized with water through nozzles, stretching the extruded material to form fibers by a high speed gas flow, heating the fibers to evaporate the water in the fibers and then collecting the fibers.
  • the invention further provides the use of a non-woven fabric as hereinbefore defined as a moisture absorptive material or as a packaging material.
  • nonwoven fabric or cloth consisting of water-soluble resin superfine fibers, which can be applied to various uses.
  • a nonwoven fabric consisting of water-soluble resin superfine fibers, in particular pullulan superfine fibers, having a mean fiber diameter of 30 pm or less, preferably 0.1 to 15 pm, most preferably 1 to 10 um and a basis weight of 5 to 500 g/m 2 , preferably 5 to 400 g/m 2 , most preferably 10 to 300 g / m 2 .
  • Such a nonwoven fabric can be prepared by extruding an aqueous solution containing a water-soluble resin or a melt of a water-soluble resin plasticized with water through a nozzle, stretching the extruded matter to form fibers by a high speed gaseous stream, simultaneously heating the fiber stream to evaporate the water in the fibers and then collecting the fibers.
  • the water-soluble resins which can generally be used in the present invention are water-soluble linear high-molecular weight materials having at least one -OH, -COOH or -COONH 2 group in the molecule, for example pullulan (a natural glucan wherein units of maltotriose corresponding to a trimer of glucose are repeatedly bonded through ⁇ -1, 6-linkages which can be produced by cultivating a black yeast Aureobasidium pullulans using decomposed products of starch or cane sugar under suitable conditions and having the molecular structure represented by the following formula), polyvinyl alcohol, polyacrylamide, polyacrylic acid, polymethacrylic acid, polyitaconic acid, polyethylene oxide, polyvinylpyrrolidone, polyvinyl methylene ether, hydroxypropyl cellulose, xanthan gum, guar gum, collagen and hydroxyethyl cellulose.
  • pullulan a natural glucan wherein units of maltotriose corresponding to a trimer of glucose are
  • the water-soluble resins used in the present invention are not limited by the processes for the production thereof, nor by the molecular weights thereof. In view of the strength and workability of a nonwoven fabric to be obtained, however, it is preferable to use those having a molecular weight of 2 to 200 x 10 , more preferably 5 to 100 x 10 4 .
  • water-soluble resins can be used individually or in combination.
  • these water-soluble resins can optionally be mixed with plasticizers or softeners, for example, water and polyhydric alcohols such as glycerol, sorbitol, maltitol, ethylene glycol and polypropylene glycol.
  • plasticizers or softeners for example, water and polyhydric alcohols such as glycerol, sorbitol, maltitol, ethylene glycol and polypropylene glycol.
  • polyhydric alcohols such as glycerol, sorbitol, maltitol, ethylene glycol and polypropylene glycol.
  • inorganic materials such as apatite. silica, silicon carbide, silicon nitride, zeolite, activated carbon, alumina and rare earth element compounds. In this case, for example, it is possible to obtain products similar to a nonwoven fabric of inorganic fibers.
  • the water-soluble resin for use as a raw material for the nonwoven fabric of the present invention may be dissolved in or plasticized with water at a temperature of 20 to 70°C, in particular, 20 to 35 0 C in the case of pullulan, to prepare a starting liquid having a resin content of 5 to 95% by weight, preferably 10 to 40% by weight.
  • the starting liquid may be extruded from a die consisting of a plurality of spinning nozzles each having small holes aligned width-wise, while simultaneously a gas, e.g. air at a temperature of 20 to 60 o C, in particular, 25 to 60°C in the case of pullulan, is blown from around the nozzles at a linear velocity of e.g. 10 to 1000 m/sec against the extruded filaments to form a fiber stream consisting of stretched fine fibers.
  • the diameters of the resulting fibers can be controlled to a suitable range, for example, 0.1 to 30 pm by varying the flow rate of this gas.
  • the fine fiber stream is heated to evaporate and remove the water in the fibers by means of a heater provided at a suitable interval beneath the die, for example, an infrared heater or microwave heater, in such a manner that the water preferably remains in the fiber in a proportion of 10% or less by weight, particularly 8% or less by weight. If the removal of water is insufficient, a non-woven fabric cannot be obtained, and only a highly viscous liquid results.
  • the heating temperature of the fiber stream is preferably 80 to 120°C, depending on e.g. the quantity of the starting liquid extruded containing a water-soluble resin, the variety of a water-soluble resin and the balance of the temperature and pressure (flow rate) of a blown gas. Raising the heating temperature to higher than required is not favourable because of resulting decomposition of a water-soluble resin with a lower decomposition temperature, e.g. pullulan in addition to removal of the water.
  • the fine fiber stream which has been subjected to stretching and removal of water, is entangled and allowed to fall on a collecting means, for example, a revolving drum or moving belt of net or perforated plate, thereby forming a nonwoven cloth.
  • a collecting means for example, a revolving drum or moving belt of net or perforated plate, thereby forming a nonwoven cloth.
  • the fiber stream when the fiber stream is blown against and allowed to fall on a part other than the contact point of the collecting drums or a collecting belt of flat plate type, there is obtained a nonwoven fabric wherein fibers are arranged in parallel with the plane, i.e. two-dimensionally.
  • the basis weight of the nonwoven fabric can be controlled to a suitable range, for example, 5 to 500 g/m 2 by varying the moving rate of the above described collecting means of the fiber stream.
  • a nonwoven fabric consisting of water-soluble resin superfine fibers, in particular, pullulan superfine fibers can be produced by blowing a high speed gaseous flow, i.e. an air current, against extruded water-soluble resin fibers to give a stretching ratio or magnification of 10 to 3000 times, preferably 20 to 1000 times and heating the fibers to rapidly evaporate the water in the fibers.
  • This process provides a nonwoven fabric of water-soluble resin fibers with a mean fiber diameter of 30 pm or less, preferably 0.1 to 15 pm, most preferably 1 to 10 pm and a basis weight of 50 to 500 g/m 2 . preferably 5 to 400 g/m 2 , most preferably 1 0 to 300 g /m 2 .
  • Fig. 1 shows a schematic side view of an apparatus for producing a nonwoven fabric according to the present invention.
  • An aqueous solution containing a water-soluble resin such as pullulan or a melt of water-soluble resin plasticized with water is fed from feed pipe 1 to stock tank 2.
  • This starting liquid is extruded from spinning nozzles 5 each having nozzle hole 5' by gear pump 4 driven by motor 3 and at the same time, high pressure air supplied by blower 6 is blown downward from air nozzles 7 as shown in Fig. 2 (a) and (b) to form a water-containing water-soluble resin fiber stream 8.
  • Water-containing, water-soluble resin fiber stream 8 is heated from both the sides thereof by a far infrared heater 9 provided in parallel with fiber stream 8 while fiber stream 8 is allowed to fall and be collected on net-type collecting drum 11 thereby evaporating and removing the water in the fibers.
  • the thus stretched and dehydrated water-soluble resin fiber stream 10 is allowed to fall, with entangling, on the contact point of two revolving, net-type collecting drums 11. compressed therebetween to form nonwoven fabric 12 and wound up by winding-up means 13.
  • the water-soluble resin nonwoven fabric, in particular pullulan nonwoven fabric, of the present invention is a nonwoven fabric consisting of fine fibers, which has hitherto not been obtained from the water-soluble resin fibers, in particular, pullulan fibers of the prior art.
  • the nonwoven fabric of the present invention consisting of superfine fibers of a water-soluble resin, is hydrophilic, hygroscopic, free from electrification, readily soluble in not only warm water but also cold water, edible, nonpoisonous, odorless and not stimulative to the skin, and has a soft and pleasant feel. Furthermore, the nonwoven fabric of the present invention does not meet with any waste-disposal problem because it naturally decomposes in water or in the ground after used.
  • the nonwoven fabric of the present invention has a variety of uses, for example, in highly moisture-absorptive sanitary goods such as baby's napkins, women's sanitary napkins and toilet paper or as a packaging material for foods, detergents, adsorbents or adhesives.
  • Pullulan powder with a mean molecular weight of 2 0 x 1 0 4 was dissolved in water to prepare a 20 wt% aqueous solution and subjected to degassing. This solution was fed to an apparatus as shown in Fig. 1 at room temperature (25°C) and extruded through nozzles of 0.3 mm diameter under a pressure of 2.0 kg/cm 2 , while simultaneously air was blown against the extruded fibers at a linear velocity of 400 m/sec from air nozzles to form a fiber stream.
  • the resulting fiber stream was heated from both the sides of the fiber stream by a far infrared heater (wavelength: 2-50 um) provided at a distance of 30 mm beneath the nozzles at a heater temperature of 400°C and blown against net type collecting drums to obtain a nonwoven fabric of pullulan from which the water content was evaporated and removed.
  • the resulting nonwoven fabric had a basis weight of 10 g / m 2 and a mean fiber diameter of 4 pm.
  • the hydroscopicity thereof at a temperature of 25°C and a relative humidity of 100% was 130%, 230% and 640% respectively after 30 hours, 120 hours and 340 hours.
  • the nonwoven fabric instantaneously dissolved in water at room temperature.
  • Pullulan powder with a mean molecular weight of 20 x 10 4 was dissolved in water to prepare a 20 wt% aqueous solution of pullulan, to which 30% by weight of apatite powder (grain diameter: 50-300 A) and 0.18% by weight of a synthetic polycarboxylate (ALON A6114 - commercial name - manufactured by Toa Gosei Chemical Industry Co., Ltd.) as a dispersing agent were added, and then subjected to degassing.
  • This solution was fed to the apparatus used in Example 1 at room temperature (25°C) and extruded under a pressure of 2.1 kg/cm 2 .
  • the resulting fiber stream was heated from both the sides of the fibers stream by a far infrared heater (wavelength: 2-50 pm) provided at an interval of 20 mm beneath the nozzles at a heater temperature of 500°C and blown against net-type collecting drums to obtain a nonwoven fabric of pullulan containing apatite powder, from which the water content was evaporated and removed.
  • the resulting nonwoven fabric had a basis weight of 200 g/m 2 and a mean fiber diameter of 12 pm.
  • Example 1 The procedure of Example 1 was repeated except for changing the extrusion pressure of the aqueous solution of pullulan from 2.0 kg/cm 2 to 1 . 4 kg/cm 2 . Substantially similar results were obtained.
  • Polyvinyl alcohol powder having a mean molecular weight of 19 x 10 4 was dissolved in water to prepare a 20 wt% aqueous solution of polyvinyl alcohol, and then subjected to degassing. This solution was fed to the apparatus used in Example 1 at room temperature (25°C) and extruded at a pressure of 2.0 kg/cm 2 , while simultaneously air was blown against the extruded filaments at a linear velocity of 480 m/sec from the air nozzles to form a fiber stream.
  • the resulting fiber stream was heated from both the sides of the fiber stream by a far infrared heater (wavelength: 2-50 pm) provided at an interval of 30 mm beneath the nozzles at a heater temperature of 450°C and blown against net-type collecting drums to obtain a nonwoven fabric of polyvinyl alcohol, from which the water content was evaporated and removed.
  • the resulting nonwoven fabric had a basis weight of 30 g/m 2 and a mean fiber diameter of 8 pm.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP85306651A 1984-09-18 1985-09-18 Procédé de fabrication d'une étoffe non tissée en fibres de résine soluble dans l'eau Ceased EP0176316A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP59193970A JPS6175861A (ja) 1984-09-18 1984-09-18 プルラン不織布
JP193970/84 1984-09-18
JP59194796A JPS6175862A (ja) 1984-09-19 1984-09-19 水溶性樹脂不織布の製造方法
JP194796/84 1984-09-19

Publications (2)

Publication Number Publication Date
EP0176316A2 true EP0176316A2 (fr) 1986-04-02
EP0176316A3 EP0176316A3 (fr) 1989-04-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP85306651A Ceased EP0176316A3 (fr) 1984-09-18 1985-09-18 Procédé de fabrication d'une étoffe non tissée en fibres de résine soluble dans l'eau

Country Status (3)

Country Link
US (1) US5041252A (fr)
EP (1) EP0176316A3 (fr)
CA (1) CA1279452C (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301804A2 (fr) * 1987-07-29 1989-02-01 Arco Chemical Technology, Inc. Procédé et appareil pour la fabrication d'articles fibreux non tissés
FR2675161A1 (fr) * 1991-04-10 1992-10-16 Isolyser Co Procede pour se debarrasser d'articles vestimentaires en une etoffe soluble dans de l'eau chaude.
WO1993000210A1 (fr) * 1991-06-24 1993-01-07 Minnesota Mining And Manufacturing Company Dispositifs de fixation desintegrables
EP0547604A1 (fr) * 1991-12-19 1993-06-23 Kimberly-Clark Corporation Procédé de préparation d'un tissu non-tissé de fibres de poly(alcool de vinyle)
GB2267711A (en) * 1991-04-10 1993-12-15 Isolyser Co Hot - water soluble polyvinyl alcohol fabric articles and method of disposal thereof
WO1995023249A1 (fr) * 1994-02-28 1995-08-31 The Procter & Gamble Company Procedes de pulverisation faisant appel a un ecoulement gazeux et destines a la production de fibrilles biodegradables, non tisses comprenant ces fibrilles biodegradables, et articles comprenant de tels non-tisses
US5447788A (en) * 1994-05-16 1995-09-05 Kimberly Clark Corporation Porous, nonwoven liquid-activated barrier
US5470653A (en) * 1994-08-05 1995-11-28 Isolyser Company, Inc. Disposable mop heads
US5620786A (en) * 1993-04-29 1997-04-15 Isolyser Co. Inc. Hot water soluble towels, sponges and gauzes
EP0773315A1 (fr) * 1995-11-09 1997-05-14 H.B. Fuller Licensing & Financing, Inc. Nappe de non-tissé contenant du polyamide soluble dans l'eau et produits réalisés à partir de ces nappes
US5650219A (en) * 1991-04-10 1997-07-22 Isolyser Co. Inc. Method of disposal of hot water soluble garments and like fabrics
US5661217A (en) * 1994-08-05 1997-08-26 Isolyser Company, Inc. Method of manufacturing monolithic structures from polyvinyl alcohol
US5707731A (en) * 1996-05-09 1998-01-13 Isolyser Company, Inc. Disposable cleaning articles
US5871679A (en) * 1991-04-10 1999-02-16 Isolyser Company, Inc. Method of producing hot water soluble garments and like fabrics
US5885907A (en) * 1993-04-29 1999-03-23 Isolyser Company, Inc. Method of disposal of hot water soluble garments and like fabrics
US5891812A (en) * 1996-10-11 1999-04-06 Isolyser Company, Inc. Liquid absorbable non-permeable fabrics and methods of making, using, and disposing thereof
USRE36399E (en) * 1991-04-10 1999-11-23 Isolyser Company, Inc. Method of Disposal of hot water soluble utensils
US6048410A (en) * 1991-04-10 2000-04-11 Isolyser Company, Inc. Method of disposal of hot water soluble garments and like fabrics

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JPH0751209B2 (ja) * 1991-06-06 1995-06-05 ベステクス株式会社 フィルタ材の製造方法
CA2128483C (fr) * 1993-12-16 2006-12-12 Richard Swee-Chye Yeo Compositions jetables dans les toilettes
US5952251A (en) * 1995-06-30 1999-09-14 Kimberly-Clark Corporation Coformed dispersible nonwoven fabric bonded with a hybrid system
JP3474981B2 (ja) * 1995-10-11 2003-12-08 花王株式会社 浴用剤
US6530910B1 (en) * 1997-12-31 2003-03-11 Kimberly-Clark Worldwide, Inc. Flushable release film with combination wiper
US6828014B2 (en) 2001-03-22 2004-12-07 Kimberly-Clark Worldwide, Inc. Water-dispersible, cationic polymers, a method of making same and items using same
JP4063519B2 (ja) * 2001-10-15 2008-03-19 ユニ・チャーム株式会社 非弾性的な伸長性を有する繊維ウエブの製造方法
US7871946B2 (en) * 2003-10-09 2011-01-18 Kuraray Co., Ltd. Nonwoven fabric composed of ultra-fine continuous fibers, and production process and application thereof
US7856989B2 (en) * 2004-12-30 2010-12-28 Philip Morris Usa Inc. Electrostatically produced fast dissolving fibers
US7651559B2 (en) 2005-11-04 2010-01-26 Franklin Industrial Minerals Mineral composition
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CN111542590A (zh) 2018-01-26 2020-08-14 宝洁公司 包含香料的水溶性单位剂量制品
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WO2019147532A1 (fr) 2018-01-26 2019-08-01 The Procter & Gamble Company Articles en dose unitaire soluble dans l'eau comprenant un parfum
WO2019168829A1 (fr) 2018-02-27 2019-09-06 The Procter & Gamble Company Produit de consommation comprenant un conditionnement plat contenant des articles de dose unitaire
US10982176B2 (en) 2018-07-27 2021-04-20 The Procter & Gamble Company Process of laundering fabrics using a water-soluble unit dose article
US11859338B2 (en) 2019-01-28 2024-01-02 The Procter & Gamble Company Recyclable, renewable, or biodegradable package
EP3712237A1 (fr) 2019-03-19 2020-09-23 The Procter & Gamble Company Articles fibreux de dose unitaire soluble dans l'eau comprenant des structures fibreuses solubles dans l'eau
US11679066B2 (en) 2019-06-28 2023-06-20 The Procter & Gamble Company Dissolvable solid fibrous articles containing anionic surfactants
JP2023534686A (ja) 2020-07-31 2023-08-10 ザ プロクター アンド ギャンブル カンパニー ヘアケア用プリル含有水溶性繊維パウチ

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Publication number Priority date Publication date Assignee Title
FR2264896A1 (fr) * 1974-03-20 1975-10-17 Sumitomo Chemical Co
EP0041771A2 (fr) * 1980-05-23 1981-12-16 Riker Laboratories, Inc. Nappe d'héparine et procédé
DE3131071A1 (de) * 1981-08-05 1983-02-24 Institute für Textil- und Faserforschung Stuttgart, 7410 Reutlingen Verfahren zur herstellung von fasern fuer medizinische zwecke, nach den verfahren hergestellte fasern fuer medizinische zwecke und ihre verwendung
GB2130260A (en) * 1982-11-17 1984-05-31 Kimberly Clark Co Non-woven web formation

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301804A2 (fr) * 1987-07-29 1989-02-01 Arco Chemical Technology, Inc. Procédé et appareil pour la fabrication d'articles fibreux non tissés
EP0301804A3 (fr) * 1987-07-29 1990-05-09 Arco Chemical Technology, Inc. Procédé et appareil pour la fabrication d'articles fibreux non tissés
US5871679A (en) * 1991-04-10 1999-02-16 Isolyser Company, Inc. Method of producing hot water soluble garments and like fabrics
US6048410A (en) * 1991-04-10 2000-04-11 Isolyser Company, Inc. Method of disposal of hot water soluble garments and like fabrics
FR2675161A1 (fr) * 1991-04-10 1992-10-16 Isolyser Co Procede pour se debarrasser d'articles vestimentaires en une etoffe soluble dans de l'eau chaude.
GB2267711A (en) * 1991-04-10 1993-12-15 Isolyser Co Hot - water soluble polyvinyl alcohol fabric articles and method of disposal thereof
US5650219A (en) * 1991-04-10 1997-07-22 Isolyser Co. Inc. Method of disposal of hot water soluble garments and like fabrics
USRE36399E (en) * 1991-04-10 1999-11-23 Isolyser Company, Inc. Method of Disposal of hot water soluble utensils
US5350630A (en) * 1991-06-24 1994-09-27 Minnesota Mining And Manufacturing Company Repulpable securing devices
WO1993000210A1 (fr) * 1991-06-24 1993-01-07 Minnesota Mining And Manufacturing Company Dispositifs de fixation desintegrables
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CA1279452C (fr) 1991-01-29
US5041252A (en) 1991-08-20
EP0176316A3 (fr) 1989-04-26

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